284 NEW CRYPTOGAMIC PLANTS 
little altered in position when moistened, flexuose, very wide, their 
tops incurved ; they have along the nerve a remarkably close fold 
resembling a wing, which can scarcely be opened without breaking 
the leaf; the margins of the leaves are reflexed. The top of 
the calyptra is scabrous and dark brown. Perigonia minute, with 
but few leaves, of which the inner are nerveless and obtuse. Outer 
peristome of sixteen linear-lanceolate teeth; inner of as many 
filiform pale cie. The stems are more elongated, more equal in 
thickness, the leaves are far wider, and the calyptra more com- 
pound at the base than in D. splachnoides, H. et T. 
2. D. longifolia, Tayl. Monoica. Caule erecto, laxe cæspitoso, 
subramoso; surculis subcompressis, apice latioribus ; foliis im- 
bricatis, erecto-patentibus, flexuosis, lineari-lanceolatis, canali- 
culatis, nervo evanescente, marginatis, margine pellucido, plano, 
integerrimo, dense cellulosis; seta scabra; capsula oblongo- 
ovata, erecta, subæquali; operculo longirostro; calyptra bast 
dense laciniata. : 
On Pichincha. Prof. W. Jameson. Feb., 1847. 
Bright yellowish-green, somewhat shining, about half an inch 
high; branches subdichotomous, wider at their tops. Leaves 
somewhat more patent when moistened, their tops acuminate, flat 
and nerveless; their cells very minute. Inner perichætial leaves 
acuminate and nerveless. The length of the leaves and their dense 
structure are distinctive. 
Criroscyraus. Corda. 
1. C. fragitifolius, Tayl. . Caule elongato, laxe cæspitoso, procum- 
bente, subramoso ; foliis imbricatis, supremis secundis, erecto- 
patentibus, quadrato-obovatis, antice gibbosis, integerrimis, 
margine dorsali decurrentibus; stipulis liberis, minutis, ovato- 
lanceolatis, bipartitis, segmentis extrorsum unidentatis ; peri- 
.goniis breviter spicatis, subterminalibus. 
On Pichincha. Prof. W. Jameson. 8th Aug., 1847. 
Tufts two inches long, lurid brown. Leaves fragile when wet ; 
the margins of the upper incurved, of the lower plane. From 
C. Jivido-brunneus, Mont.. MSS., this is know by the minuter 
